code: def test_sketch_float(self):
      int_data = [1.2, 3, 0.4, 6.789, None]
      sa = SArray(data=int_data)
      self.__validate_sketch_result(sa.summary(), sa)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ..data_structures.sarray import SArray
  import pandas
  import numpy
  import unittest
  import random
  import copy
  import os
  import math
  import array
  import time
  import itertools
  import pytest
label_desc: Use image node_id 4 for calling the SArraySketchTest obj's underlying member method code with example usage: obj.test_sketch_float() without return types